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			 change out the stock bulbs and I don't think you'll have a promlem growing SPS...I've got an undata doing great under just 4 bulbs, but it is near the tope 1/3rd of the tank and I changed out one bulb for now, will be changing out the other three when I get back down there. 
		
	
		
		
		
		
			
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	75 gallon with 20 gallon sump in the works. R. Bacchiega. Tattooer I didn't smack you, I simply High Fived your face. I've got so much glue on my pants it looks like a Friday night gone horribly wrong.  | 
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			 Don't waste your money on this fixture. TEK's are cheap now that the elites are out. You can get a 6 bulbs for $340 now and your going to have to change out the bulbs on the "fishneedit" fixture. Spending that extra bit will be well worth it.  
		
	
		
		
		
		
		
	
		
		
	
	
	imo for a 90gal a 4 bulbs is garbage  |